tuning capacitor การใช้

• The only other parts required to build a Radio receiver were the tuning coil; the tuning capacitor and the loudspeaker.
• When used with aperiodic windings, the sense circuit has to be wired into the receiver side, along with the tuning capacitor.
• This common circuit did not use a tuning capacitor, but used the capacitance of the antenna to form the tuned circuit with the coil.
• Often several sections would be provided on a tuning capacitor, to tune several stages of the receiver in tandem, or to allow switching between different frequency bands.
• A blast of dry air from a can is useful in getting crud out of the tuning capacitor . talk ) 20 : 00, 23 April 2011 ( UTC)
• Early examples had difficulty oscillating across the frequency range because the oscillator feedback was via the first intermediate frequency transformer primary tuning capacitor, which was too small to give good feedback.
• Endowed with 128 characters of read-only memory, the chip has an electromagnetic cell for transmitting data and a tuning capacitor that responds when it comes within 12 inches of an authorized scanner.
• Later ( late 1920s ) TRF sets had ganged tuning ( one knob was used to control all stage tuning capacitors simultaneously ), AC house current operation, and eliminated the filament voltage adjustments.
• The second and third tuning capacitors, " C2 " and " C3 ", are ganged together " ( indicated by line linking them ) " and controlled by a single knob, to simplify tuning.
• One method of adding a bandspread control was to put a relatively small value variable tuning capacitor and dial directly in parallel with the main tuning variable capacitor ( or connected to a tap on the coil of the tuned circuit ).
• Technically knowledgeable consumers and other manufacturers frequently bypass the limiting features of trusted clients  from the simple replacement of the fixed tuning capacitor in the early locked radios to the successful DeCSS cryptographic attack on CSS in 1999 . Manufacturers have resorted to legal threats via the Digital Millennium Copyright Act and similar laws to prevent their circumvention, with varying degrees of success.